The short version
Just 2 companies supply this market — thin enough that a single exit would be felt immediately.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Undecylenic Acid, Tolnaftate · UNDECYLENIC ACID 1 g/4g; TOLNAFTATE .04 g/4g · Solution · Topical · Guangzhou Lianbiquan Biological Technology co., Ltd
NDC 87724-5118-01 · 5 APPLICATOR in 1 BOX / 4 g in 1 APPLICATOR · OTC MONOGRAPH DRUG · View full market →
Just 2 companies supply this market — thin enough that a single exit would be felt immediately.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Medicare Part D does not cover over-the-counter drugs — by law it pays only for products requiring a prescription.
How Part D pricing works →No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Not scored — fragility is computed for NADAC-priced NDCs.
No FDA shortage reports for this drug or its presentations.
No enforcement reports list this package NDC.
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Guangzhou Lianbiquan Biological Technology co., Ltd | UNDECYLENIC ACID 1 g/4g; TOLNAFTATE .04 g/4g | Aug 26, 2026 | Sep 2, 2026 |
| Guangzhou Saweilan Import & Export Trading Co., Ltd | UNDECYLENIC ACID .25 g/mL; TOLNAFTATE .01 g/mL | Aug 26, 2026 | Sep 2, 2026 |
| Guangzhou Lianbiquan Biological Technology co., Ltd | UNDECYLENIC ACID .04 g/4g; TOLNAFTATE 1 g/4g | Jul 22, 2026 | Aug 19, 2026 |
| Guangzhou Saweilan Import & Export Trading Co., Ltd | UNDECYLENIC ACID .01 g/mL; TOLNAFTATE .25 g/mL | Jul 22, 2026 | Aug 19, 2026 |
| Guangzhou Lianbiquan Biological Technology co., Ltd | TOLNAFTATE .04 g/4g; UNDECYLENIC ACID 1 g/4g | Jul 15, 2026 | Jul 15, 2026 |
| Guangzhou Saweilan Import & Export Trading Co., Ltd | TOLNAFTATE .01 g/mL; UNDECYLENIC ACID .25 g/mL | Jul 15, 2026 | Jul 15, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Putrizen — NDC 87724-5118-01," retrieved September 3, 2026, https://drugdashboards.com/drug/87724511801.
Free to cite with attribution — see how the data is put together.